213  
FZUS54 KHGX 171112  
CWFHGX  
 
COASTAL WATERS FORECAST FOR TEXAS  
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX  
612 AM CDT THU JUL 17 2025  
 
UPPER TEXAS COASTAL WATERS FROM HIGH ISLAND TO THE MATAGORDA SHIP  
CHANNEL OUT 60 NAUTICAL MILES INCLUDING GALVESTON AND MATAGORDA  
BAYS.  
 
SEAS ARE PROVIDED AS A RANGE OF THE AVERAGE HEIGHT OF THE HIGHEST  
1/3 OF THE WAVES...ALONG WITH THE OCCASIONAL HEIGHT OF THE  
AVERAGE HIGHEST 10 PERCENT OF THE WAVES.  
 
GMZ300-180015-  
612 AM CDT THU JUL 17 2025  
 
.SYNOPSIS FOR HIGH ISLAND TO THE MATAGORDA SHIP CHANNEL OUT 60 NM  
INCLUDING GALVESTON AND MATAGORDA BAYS.  
 
ONSHORE WINDS IN THE 5 TO 15 KNOT RANGE WITH OCCASIONALLY HIGHER  
GUSTS AND 2 TO 4 FOOT SEAS ARE IN THE FORECAST THROUGH THE END OF  
THE WEEK. RAIN CHANCES INCREASE LATE THURSDAY INTO FRIDAY AS A  
DISTURBANCE APPROACHES FROM THE EAST. NHC CONTINUES TO MONITOR  
A DISTURBANCE IN THE FAR NORTHERN GULF FOR SOME POTENTIAL  
TROPICAL DEVELOPMENT TODAY INTO FRIDAY. MOISTURE FROM THIS  
DISTURBANCE WILL INCREASE RAIN CHANCES FOR FRIDAY AND SATURDAY.  
 

 
 
GMZ335-180015-  
GALVESTON BAY-  
612 AM CDT THU JUL 17 2025  
   
TODAY
 
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTH THIS  
AFTERNOON. BAY WATERS SMOOTH.    
TONIGHT
 
SOUTHWEST WINDS AROUND 10 KNOTS. BAY WATERS SMOOTH TO  
SLIGHTLY CHOPPY. A CHANCE OF SHOWERS AND THUNDERSTORMS AFTER  
MIDNIGHT.    
FRIDAY
 
SOUTHWEST WINDS 5 TO 10 KNOTS, BECOMING SOUTH IN THE  
AFTERNOON. BAY WATERS SMOOTH. A CHANCE OF THUNDERSTORMS. SHOWERS  
LIKELY.    
FRIDAY NIGHT
 
SOUTH WINDS AROUND 10 KNOTS. BAY WATERS SMOOTH TO  
SLIGHTLY CHOPPY. A CHANCE OF SHOWERS AFTER MIDNIGHT.    
SATURDAY
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY. A CHANCE OF SHOWERS AND THUNDERSTORMS.    
SATURDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.    
SUNDAY
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY CHOPPY.   
SUNDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.    
MONDAY
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY CHOPPY.   
MONDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
GMZ330-180015-  
MATAGORDA BAY-  
612 AM CDT THU JUL 17 2025  
   
TODAY
 
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS SMOOTH.    
TONIGHT
 
SOUTH WINDS AROUND 10 KNOTS. BAY WATERS SMOOTH TO  
SLIGHTLY CHOPPY.    
FRIDAY
 
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS SMOOTH.    
FRIDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.    
SATURDAY
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.    
SATURDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.    
SUNDAY
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY CHOPPY.   
SUNDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.    
MONDAY
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY CHOPPY.   
MONDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.  
 

 
 
GMZ350-355-180015-  
COASTAL WATERS FROM FREEPORT TO MATAGORDA SHIP CHANNEL TX OUT  
20 NM-COASTAL WATERS FROM HIGH ISLAND TO FREEPORT TX OUT 20 NM-  
612 AM CDT THU JUL 17 2025  
   
TODAY
 
SOUTHWEST WINDS 5 TO 10 KNOTS, BECOMING SOUTH LATE. SEAS  
AROUND 2 FEET. WAVE DETAIL: SOUTH 2 FEET AT 5 SECONDS.    
TONIGHT
 
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE  
DETAIL: SOUTH 2 FEET AT 5 SECONDS. A CHANCE OF SHOWERS WITH A  
SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.    
FRIDAY
 
SOUTHWEST WINDS 5 TO 10 KNOTS, BECOMING SOUTH IN THE  
AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH 2 FEET AT  
4 SECONDS. A CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS.    
FRIDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.  
WAVE DETAIL: SOUTH 2 FEET AT 4 SECONDS.    
SATURDAY
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE  
DETAIL: SOUTH 2 FEET AT 4 SECONDS. A CHANCE OF SHOWERS IN THE  
MORNING.    
SATURDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS WITH GUSTS UP TO  
20 KNOTS. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH 3 FEET AT  
5 SECONDS.    
SUNDAY
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.    
SUNDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.    
MONDAY
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.    
MONDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.  
 
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
GMZ370-375-180015-  
WATERS FROM FREEPORT TO MATAGORDA SHIP CHANNEL TX FROM 20 TO  
60 NM-WATERS FROM HIGH ISLAND TO FREEPORT TX FROM 20 TO 60 NM-  
612 AM CDT THU JUL 17 2025  
   
TODAY
 
SOUTHWEST WINDS 5 TO 10 KNOTS, BECOMING SOUTH THIS  
AFTERNOON. SEAS AROUND 2 FEET. WAVE DETAIL: SOUTH 2 FEET AT  
5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE THIS  
MORNING.    
TONIGHT
 
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE  
DETAIL: SOUTH 2 FEET AT 4 SECONDS. A CHANCE OF SHOWERS WITH A  
SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.    
FRIDAY
 
SOUTHWEST WINDS 5 TO 10 KNOTS, BECOMING SOUTH IN THE  
AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH 2 FEET AT  
4 SECONDS. A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING,  
THEN A CHANCE OF SHOWERS IN THE AFTERNOON.    
FRIDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 3 TO 4 FEET.  
WAVE DETAIL: SOUTH 2 FEET AT 4 SECONDS.    
SATURDAY
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 3 TO 4 FEET. WAVE  
DETAIL: SOUTHEAST 2 FEET AT 5 SECONDS. A CHANCE OF SHOWERS IN THE  
MORNING.    
SATURDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET.  
WAVE DETAIL: SOUTHEAST 3 FEET AT 6 SECONDS.    
SUNDAY
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.    
SUNDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.    
MONDAY
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.    
MONDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.  
 
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
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